Home Postcode finder QLD Wiyarra Wiyarra postcode QLD Wiyarra is a locality in Queensland covered by postcode 4370. Postcode 4370 State or territory Queensland (QLD) Region Toowoomba Region Add a free Wiyarra business listing Be the first listing in Wiyarra Common questionsWhat is the postcode for Wiyarra?Wiyarra, QLD has the postcode 4370.What state is Wiyarra in?Wiyarra is in Queensland (QLD).Does postcode 4370 cover more than one suburb?Yes. Postcode 4370 covers 46 localities, so the postcode alone does not identify Wiyarra. Browse other postcodes in Queensland, or widen the search to every Australian postcode.